PART - 1 CH - 1 Some Basic Concepts of Chemistry — Chemistry STD 11 Science — Question
Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryPART - 1 CH - 1 Some Basic Concepts of Chemistry1 Mark
Question
How are $0.50 mol Na _2 CO _3$ and 0.50 M $Na _2 CO _3$ different?
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Answer
molar mass of $Na _2 CO _3$ $ \begin{aligned} =(2 \times 23)+12+(3 \times 16) & =106 g mol^{-1} \\ 0.5 mol Na_2 CO_3 \text { means } 0.50 & \times 106 g^{-1} \\ = & 53 g Na_2 CO_3 \end{aligned} $ and $0.50 M Na _2 CO _3$ means $53 g Na _2 CO _3$ is present in one liter solution.
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